<template>
  <el-container class="homecontainer">
    <!-- 头部 -->
    <el-header>
        <div>
        <span>电商后台管理系统</span>    
        </div>
        <el-button type="info" @click="tcbutton">退出</el-button>
    </el-header>

    <!-- 页面主体区域 -->
    <el-container>
      <!-- 侧边栏 -->
      <el-aside :width="isCollapse ? '64px':'250px'">;
        <div class="toggle-button" @click="toogglecolle">|||</div>
      <el-menu background-color="#333744" text-color="#fff" active-text-color="#409EFF" :unique-opened="true" :collapse="isCollapse" :collapse-transition="false" router :default-active="activePath">
      <!-- 一级菜单 -->
      <el-submenu :index="item.id+''" v-for="item in menulist" :key="item.id">
          <!-- 一级菜单的模块区域 -->
        <template  slot="title">
            <!-- 图标 -->
          <i :class="iconsObj[item.id]"></i>
          <!-- 文本 -->
          <span>{{item.authName}}</span>
        </template>
      <!-- 二级菜单 -->
        <el-menu-item :index="'/'+subitem.path" v-for="subitem in item.children" :key="subitem.id" @click="saveNavState('/'+subitem.path)">
            <template slot="title">
                <!-- 图标 -->
            <i class="el-icon-menu"></i>
                <!-- 文本 -->
            <span slot="title">{{subitem.authName}}</span>
            </template>
        </el-menu-item>

        
        
      </el-submenu>
      
    </el-menu>



      </el-aside>
      <!-- 右侧内容区域 -->
      <el-main>
        <!-- 路由 -->
      <router-view></router-view>

      </el-main>
    </el-container>
  </el-container>
</template>

<script>
export default {
  data() {
    return {
      //左侧菜单栏
        menulist:[],
        iconsObj:{
          '101':'el-icon-goods',
          '102':'el-icon-tickets',
          '103':'el-icon-message',
          '125':'el-icon-user-solid',
          '145':'el-icon-monitor'
        },
        //是否折叠
        isCollapse:false,
        //被激活的链接地址
        activePath:''

    };
  },
  methods:{
    //左侧菜单栏查询
    async getMenuList(){
      const {data:res}=await this.$http.get('menus')
      if(res.meta.status!==200) return this.$message.error(res.meta.msg)
      this.menulist=res.data
      console.log(res);
    },
    //点击按钮，切换菜单折叠
    toogglecolle(){
     this.isCollapse=!this.isCollapse
    },
    //退出按钮回到登录页面
    tcbutton(){
      this.$router.push('/dl')
    },
    //保存链接的激活状态
    saveNavState(activePath){
      window.sessionStorage.setItem('activePath',activePath)
      this.activePath=activePath
    }


  },
  created(){
    this.getMenuList()
    this.activePath=window.sessionStorage.getItem('activePath')
    console.log(this.activePath);
  }


};
</script>


<style lang="less" scoped>
.homecontainer {
  height:100%;
}
.el-header {
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #ffffff;
  font-size: 20px;
  >div{
      display:flex;
      align-items: center;
  }
}
.el-aside {
  background-color: #333744;
  .el-menu{
    border-right: none;
  }
}
.el-main {
  background-color: #eaedf1;
}

.toggle-button{
    background-color: #4A5064;
    font-size: 10px;
    line-height: 25px;
    color: #ffffff;
    text-align: center;
    letter-spacing:0.3em;
    cursor: pointer;
}
</style>